Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Galena from
Lamberton Branch locality, Silver Spring, Montgomery County, Maryland, USA


Classification
Species:Galena
Formula:PbS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Galena data
Locality Data:Click here to view Lamberton Branch locality, Silver Spring, Montgomery County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:207338
Long-form Identifier:1:3:207338:5
GUID (UUID V4):0
Nearest other occurrences of Galena
17.8km (11.1 miles) ⓘMontgomery Mine (Potomac Mine), Potomac, Montgomery County, Maryland, USA
19.0km (11.8 miles) ⓘHunting Hill Quarry, Rockville, Montgomery County, Maryland, USA
19.9km (12.4 miles) ⓘMaryland Mine (Allen shaft), Potomac, Montgomery County, Maryland, USA
25.6km (15.9 miles) ⓘBull Neck Mine, Bull Neck Run, Gold-Pyrite Belt, Fairfax County, Virginia, USA
30.6km (19.0 miles) ⓘEllicott City, Howard County, Maryland, USA
41.8km (26.0 miles) ⓘCostley Gold Mine, Carroll County, Maryland, USA
43.7km (27.2 miles) ⓘNew Goose Creek Quarry, Leesburg, Loudoun County, Virginia, USA
44.7km (27.8 miles) ⓘJones Falls Quarries, Baltimore City, Maryland, USA
45.5km (28.2 miles) ⓘFarmers Cooperative Limestone Quarry, New London, Frederick County, Maryland, USA
48.3km (30.0 miles) ⓘFairfax Quarry, Centreville, Culpeper Basin, Fairfax County, Virginia, USA
References
Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. Area - Issue 5 of Educational series, Maryland Geological Survey. Department of Natural Resources, Maryland Geological Survey. p.1-148.
 
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